Incandescent igniter for gas-engines.



:No. 896,398. IPATELYITTED mails;- 1908.

J. s, LANG. INGANIJESGENT' IGNITER FOR GAS -ENGINES..

APPLICATION FILED JUNE 9, 1905.

, cle r, and exact description,

UNIT D s'rATEs mean onrron.

JAMES s. LANG, or BOSTON,MASSAOHUSETTS.

INCANDESGENT IGNITEB FOR GAS-ENGINES. I

are. 896,398.

To all whom it ma'y' concern: I

Be it known that I, JAMES S.- LANG, of Boston, in the county of Sufiolkand State of Massachusetts, a citizen of the United "States, haveinvented a new and useful Improvement in Incandescent Igniters for Gas-En 'ines, of which the following is a full, reference being had to theaccompanying drawings, forming a part ofthis specification, inexplaining its nature. I

My invention relates to an igniter or means of ignition like thatshownand described in Letters Patent, No. 727,158, granted to me May 5, 1903.As described in said patent, the means of ignition comprises an ignitingdevice contained in the exhaust passage to thecombustion chamber of- Vthe engine. This device is kept hot by the zrepeated discharges of theexhaust expelled through this passage and is adapted by itsheat orincandescence to ignite the gaseous" charges as theyare successivelyformedin the combustion chamber.

Accordin to the operation of the usual form of exp osion engine, thegaseous charge .is drawn into the'combustion chamber and theexplodedresidue or products of'combus-. tion are expelled therefrom bytheoperation of the piston, the gas being drawn inby a stroke of thepiston in one direction and the exploded residue expelled by its strokein another or reverse direction. The piston, acts to force practicallyall the exploded res1-" due from the combustion chamber or cylinder inwhich it works, but leaves some of the ex? ploded residue in the exhaustpass'age,-or-an when the explodedresidue left in the exhaust passage isso farcompressed that the end of the'igniter will be exposedto the newgaseous I charge and its-heatwillthenexplode it.

In order that the igniter'may explode the gaseous charge at justtheproper moment, it

is necessary for it to occupy .a relatively correct position in theexhaust passage with Specification of Letters Patent. Application filedJuliet, 1905. Serial No. 264,443.

, proper position to ignite the Patented Aug. 18, loos.

1 relation to the combustion chamber, and, as

described in mysaid Letters Patent, I have arranged for this byhavingthe igniter movable in said passage towards or from the combustionchamber, so that it may be moved or adjusted to a position where it willignite thegaseous charge at the proper time. Now if the amount of gas'drawn into the combustion chamber were always the same, then the degreeof its compression and that of the exploded residue left in the exhaustpassage would likewise be the same, so that after the igniter had oncebeen moved to a normallyjcorrect position it would not be necessary tochange its position in order to properly ignite the gaseous charges asthey weresuccesslvely' formed in the combustion chamber; The fact is,however, that the amount of gas or explosive mixture varies dependingupon the will of the operator, a greater amount of gas being let intothe comibustion chamber when it is desired to obtain a heavy explosionand a less amount of gas Y for a lighter explosion, depending upon theamount of power to beobtained. On, ac-

count of this variance the de me of gas com pression in the combustion camber and, the degree of compression of the exploded residue in theexhaust passage varies also, being greater when more gas is fed into theCombustion chamber and less when less' gas is let into the same. Itaccordingly becomes necessary to vary the position of the igniter in--the exhaust passage; in other words, to

move it to a position nearer the combustion chamber when a less amountof gas is let into the same, or tea position farther away from thecombustion chamber when more gas is .fed'- into said chamber, in orderthat asthe exploded residue/left in 'saidpassage is comressed to alesser .or greater degree, as beore explained, the igniter maybe exposedin atv the proper moment of its in l compression. It is accordingly thespecial object of my invention to provide meansby'which this adjustmentof the igniter may be obtained.

It is the further object of my invention to provide a new formof igniteritself.

' All of these features can best'be seen and gaseous charge I understoodby reference to thedrawings, in

which- .Figure 1. shows'mainly in vertical section aportion'of a gasexplosion engine fitted with in improved means. Fig. 2 shows an enlargeddetail thereof to which reference will li r inafter-bemade, and Fig. 3shows th I 1mproved"'forin of-igniter, in perspective.

Fig. 4 shows aidetail the check and spindle.- -Referring to the drawings:A represents a'portion of the cylinder of a gas explosion combustionchamber a in engine forming' the i which. is a piston B. The gas is-fe'dinto the combustion chamber 2, sage-a and the explodedresidue isexpelled throughthe o'utletor exhaust passa eua arranged an igniter Cn'ite as before describ'ed;"the gaseous charges .nkthe outletorexhaustpa ssage there. is which is adaptedto i sizcces'sivelyformedin'the-combu'stion cham-- beli- The igniter is arranged-upon the end ofthe'igniter rod c Whichextends through the 1 wall forming theexhaustpassage in the direca ;tion-i-n which theigniter movesv in {said pas-{-v bustion' 'chamber, with a consequent lesser sage.

' v For controlling the. gas inlet passa 'e, or for graduating theamount of ga'swhich can be et or drawn-into the combustionchanflber, I

' have arranged'in said passage a gate orcheck- D. {Thisls-lnthenature-fof a'dam er ar ranged upon a spindle don which the se 4 ipartially closed position and conse Tull-or lesser amount of gas let or.a pass into the combustion chamber.

'ampe'r maybe-turned from-an'ope'n to a closed or uently a spindle disarranged-to turn in the wall form I end d of the s J the lever is ma theinlet passage and atone end extends to project through the same by-aprojecting end or gudgeon d 1 projecting endd of 'the spindle hasafiixed toit alever El whi'c'h I operates the damper: 'The lever 'E hasprotachinent with the spindle .anoperating' arm I e and in ordertojecting beyond the point where it makes at]- permit of an adjustablel'en thening of this the proj ecting indle where it connects with esquare so as to fit within the slot-e formed in sa1d lever and besecured by anut d I means of this slot the lever may'be movedlongitudinally upon the projecting end of the It is, of course,' obviousthat by 3 s indleland its operating arm e lengthened or s ortened sorelatively-changing the distanceerarc of its movement upon turning thele- I *ver. .Pivoted to the end of the arm e. of the- "lever'is a-rod dofthe rod .c'ca rrying the igniter, soth'atf'asthe lever 'is turned'tooperate the gate'or which conn ects with the end sea-see check 1) italso;

rod, move the igniter'inthe exhaust passage 6O through the inlet. .pas--valve-controlled in l tends to :olose the valve.

' valveD is opened and the-morethe gas which -i's.allowed to abovedescribed, the. arm-when lowed to I The;

arm. (for a ,purpose whiehi wil hereinafter'be explained) 'crumed upon.said ie'niter. 1

through the connecting toward o'ififrom the combustion chamber- Now thearrangement of the gate or. check-D; with respect to the lever is suchthat as the direction to move the ig leveris turned in a niter in theexhaust from the-combustion chamber it will also open or move. wideropen the "gate a 'or valve'controlling the,

passage farther away] gas inlet passage, or

vice versa,.when itmoves-the igniter towards or nearer ,thecombustionchamb'enit also Thus the wider the ass into the combustion chant her,the fart or awaythe i niter will 'bev moved from the combustion ,c amberin or der that its exposure for ignitionof the as; eous charge may bedelayed to the time w en the charge is: fully compressed; so' also, the"more the valve D is closed and the less the amount ofgas allowed to'pass' into the eomde'gieeof cp'mpressiom-t'he more'will the igniterbemoved towards. the combustion? ment of its full compression; 'jBylengthening or shortening ing arm e ofthe lever, whichmay'be done asturned is made to pass throu this operat ng ever the tetra chamberinorder that it may be exposed toil the gaseous charge and ignite it atthe moi"- the lever is h a longer-or shorterarc of movement, andt'hegefie'ct isljfor the igniter to be moved-inth'e jexhaustpassage a longerorjshort'er distance-relatively to the movement of the valve 'ordamper Dco trolling the inlet passage, so that b" pro any adjusting thelength ofYes arm the damperand' igniter may be. sim'ultan'eously moved in r0 7 flily escribed my invent on,

. 3 Havingthus I clalm and desire to secure by Letters Patent 0 of theUni-ted-States: v In" an engine. of the'characterspeeified'hava.combustion chambeiga gas inlet and 1n exhaust passage;a'n-ignitercontained in said exhaust passage, a. damper v or check in;said v damper or cheek, is mounted, a lever fulspindle and fixedthereto,

and means connecting. said lever with said' In JAMES s.- Lane.witnessesz. j

JOHN E."R.HAYEs,- .R; E, BREWER.

inlet "passage; a spindle on which said

